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Surface flux and atmospheric boundary layer observations from the LAPS project over the middle stream of the Huaihe River basin in China
Author(s) -
Tanaka Hiroki,
Hiyama Tetsuya,
Yamamoto Koh,
Fujinami Hatsuki,
Shinoda Taro,
Higuchi Atsushi,
Endo Satoshi,
Ikeda Shoichiro,
Li Weijing,
Nakamura Kenji
Publication year - 2007
Publication title -
hydrological processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.222
H-Index - 161
eISSN - 1099-1085
pISSN - 0885-6087
DOI - 10.1002/hyp.6706
Subject(s) - planetary boundary layer , environmental science , flux (metallurgy) , atmospheric sciences , atmosphere (unit) , structural basin , troposphere , climatology , boundary layer , meteorology , surface layer , geology , layer (electronics) , geography , turbulence , geomorphology , materials science , physics , thermodynamics , metallurgy , composite material
Observations of the surface layer and the atmospheric boundary layer (ABL) were collected as part of the Lower Atmosphere and Precipitation Study (LAPS), which investigated the relationship between the surface conditions and the ABL processes. The LAPS was part of the Core Research for Evolutional Science and Technology (CREST) program, under the auspices of the Japan Science and Technology Agency (JST). Observations began in August 2003 over a flat surface region in mid‐latitude China at 32·55°N, 116·78°E. Observations before, during, and after the Meiyu season in China provided data for surface conditions varying from relatively dry to moist. Preliminary analysis of the surface and the ABL observations shows relationships between the surface fluxes and the ABL structure. ABL depth was enhanced by sensible heat flux. Fluctuations in the ABL depth corresponded to plume‐like wind structures within the ABL. Day‐to‐day variability in ABL depth was controlled mainly by buoyancy flux over the surface during dry periods. It was also affected by vertical motion at the top of the ABL, especially during wet periods. Copyright © 2007 John Wiley & Sons, Ltd.